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(No Model.) A. RAY.

HOISTING MACHINERY. No. 374,086. Patented Nov. 29, 1887.

UNITED STATES PATENT QEEiCE.

ALEXANDER BAY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF TWO- THIRDS TO CHARLES S. LOWRY AND SAMUEL BALL VAN DUSEN, BOTH OF SAME PLACE.

HOISTING MACHINERY.

SPECIPICATIQN larming part. of Letters Patent No. .374,086, dated November 29, 1887. Application filed July 30, 1887. Serial No. 245,701. (No model.)

To all whom it may concern:

Be it known that I, ALEXANDER RAY, of the city and county of Philadelphia, and State of Pennsylvania, have invented an Improvement in Hoisting Machinery, of which the following is a specification.

My invention has reference to hoisting ma chinery; and it consists in certain improvements, all of which are fullysetforth in the fol- [O lowing specification, and shown in the accompanying drawings, which form part thereof.

The object of my invention is to provide suitable mechanism to automatically dump the contents of a bucket when fully raised and in I 5 the proper position of discharge, the said mechanism being especially designed forsimplicity, cheapness, and durability.

In carrying out my invention I provide the movable carriage, a portion,which shall come in contactwith a pivoted or hinged lever, so

located that its oscillations due to the movement of the carriage shall cause an extension upon the lever to rise and lift the look by which the bucket isheld to the bail, to the end that gravity mayycome into play, and, by rotating the bucket upon its trunnions, discharge the contents.

Such are the general features of the inven- 'tion,which is shown and described hereinafter in detail.

It is evidently important that the tripping of the lock shall take place with a minimum movement of the carriage, whereby the discharge is always made in the same location.

In the drawings, Figure 1 is a sideelevation of a hoisting apparatus embodying my invention, and Fig. 2 is a front elevation of same, with part of the railway brokenaway.

A represents the two rails, which may be 40 wooden stringers covered with iron or of other suitable construction and extended down from any suitable support in 'the well-known manner. The construction of the rails is perfectly immaterial, except that there shall be no 0b 4 5 struction to the travel of the bucket and mech-.

anism of the carriage.

B represents a carriage which is provided with flanged wheels adapted to run upon the rails. Projecting down from the carriage be- 5o tween the rails is a stop, 0.

E is the lifting-cable, and is secured-at one end to the carriage B, then passed under the sheave-block D, then over a guide-pulley, J, arranged at or near the upper end of the rails, and thence to the source of power. The sheaveblock D supports the bucket F through the bail G, which is pivoted tothe bucket by the trunnion g.

H is a lock for rigidly connecting the bail G and bucket F, and I is an arm or lever which connects with the lock and extends up and across the bail, and is pivoted thereto at i. By lifting the arm I the look is lifted and the bucket is allowed to rotate.

K is a pivoted or hinged lever having a fulcrum, 7c, on the frame L, supported by the rails A or otherwise, and to the lower end of this lever K is hinged an arm, N, the point n of which is adapted to strike the under surface of the arm I to lift the look. This arm N is held inlthe proper position for operation by means of a projection, O, which is connected by a spring, P, with the lever K.

The operation will now be understood. The carriage beingfirst in the position indicated by dotted lines, Fig. 1, and the bucket being down, a pull upon the cable E will first raise the bucket' until the sheave-block D reaches the stop G. A further pull upon the rope or cable E then causes the carriage with its bucket to travel up the inclined railway until it reaches the position shown in solid lines. In this position the lock is about to be tripped; and this is accomplished by the carriage B or a projection, M, thereon striking the upper part of the lever K, the effect of which is to oscillate said lever and throw the ends a of the arm N upward and toward the arm I on the bail. The result of this is that the said. arm I and its lock are immediately raised and the contents of the bucket automatically discharged. The spring P prevents any breakage by allowing a certain amount of elasticity between the point of action on the arm I and the thrust on the upper .end of the lever K. The 9 5 movement, furth'enmore,is quick,and a slightly greater or less movement of the carriage B has no effect upon the operation of the parts. After discharging, the bucket immediately rights itself, and upon allowing the carriage B to run 100 back to its original position the arm I is freed from the arm N and the lock once more falls into locking position.

7 Vhile I prefer the construction shown, it may be modified without departing from my invention.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination of an inclined railway, a movable carriage thereon, a lifting-cable secured at one end to said carriage, a bucket having a pivoted bail and connected to said cable by a sheave-block, said bucket further having a discharging-lock and an upwardlymoving lock-operating lever pivoted to the bail, a bell-crank lever pivoted to the frame of the railway in a fixed position, and having one of its arms lower than the line oftravel of the lock-operating lever and its upper arm in theline of travel ofthe carriage,whereby, when the bucket is fully raised toward the carriage and the carriage is drawn up the inclined railway, the carriage shall strike the bell-crank lever and cause its lower arm to be forcibly thrown up, so as to strike the lock-operating lever from below, to the end that the contents of the bucket may be discharged.

2. The combination of an inclined railway, a movable carriage thereon, a lifting-eablesecured at one end to said carriage, a bucket having a pivoted bail and connected to said cable by a sheave-block, said bucket further having a discharging-lock and an upwardlymoving lockoperating lever pivoted to the bail, a bell-crank lever pivoted to the frame of the railway in a fixed position, and having one of its arms provided with a pivoted upwardlystriking end held in a position lower than the line of travel of the lock-operating lever by a spring, and its upper arm in the line of travel of the carriage, whereby when the bucket is fully raised toward the carriage and the carriage is drawn up the inclined railway the carriage shall strike the bell-crank lever and causeitslower spring-connected end to be forcibly thrown up, so as to strike the lock-operating lever from below with an elastic blow, to the end that the contents of the bucket may be discharged.

3. The combination of an inclined railway,

a movable carriage thereon, a pulley arranged at the upper part of said railway, a cable passing over said pulley and connected to the carriage, a sheave-block supported upon the cable between the carriage and pulley, a buckethaving a pivoted bail by which it is secured to the sheave-bloclga lock to lock the bail and bucket rigidly together, and an upwardly-striking lever pivoted in a fixed position to the railway, and arranged in the path of the carriage to act upon the lock and free the bucket as soon as the carriage rises sufficiently to strike said lever mechanism.

4. The combination of an inclined railway, a movable carriage thereon, a pulley arranged at the upper part of said railway, a cable passing over said pulley and connected to the carriage, a sheave-block supported upon the cable between the carriage and pulley, a bucket having a pivoted bail by which it is secured to the sheave-block, a lock to lock the bail and bucket rigidly together, a hinged horizontal lever or arm connecting with the lock. and an upwardly-striking lever pivoted in a fixed position to the railway, and arranged in the path ofthe carriage to act upon the lockoperating horizontal arm from below to lift the lock and free the bucket as soon as the carriage rises sufficiently to strike said lever mechanism.

5. The combination of an inclined railway, a movable carriage thereon, a pulley arranged at the upper part of said railway, acablepassing over said pulley and connected to the carriage, a sheave-block supported upon the cable between the carriage and pulley, a bucket having a pivoted bail by which it is secured to the sheave-block, a lock carried by the bucket and bail to lock said parts rigidly together, a lever or arm, I, to lift said lock, a pivoted lever, K, in the path of the carriage or an appendage thereon, and having a hinged end or arm, N, connected to the lever K, and held in position by a spring.

In testimony of which invention I hereunto set my hand.

ALEXANDER RAY.

Vitnesses:

WM. 0. Emma, G. W. ORoAsmLL. 

